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Features

Another Polar Expedition

Maxim's Flying Machine

The Arrow Weed and Mexican Jumping Beans

The Manufacture of Birch Oil

A Device to Hold Books in Order

An Automatic Car Brake

A Singular Bridge Accident

Coalbrookdale Bridge

The Edison Electric Illuminating Co.'s Central Station in Brooklyn, N. Y.

The World's Fair Buildings at Chicago

The Train Staff Block System

An Improved Barrel Making Machine

A Simple and Effective Nut Lock

Simple Aerial Top

An Improved Ore Concentrator

Departments

  • Letters

    Correspondence- June 13, 1891

  • Recommended

    New Books and Publications- June 13, 1891

  • Departments

    Business and Personal- June 13, 1891

  • Recently Patented Inventions- June 13, 1891

  • Notes and Queries- June 13, 1891

  • Index of Inventions- June 13, 1891

  • To Inventors- June 13, 1891

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June 13, 1891

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